you are getting this message because Media Viewer has been released, or will soon be released, to your wiki.
MediaViewer relies on machine-readable templates to display image information such as description, author or license; other tools will probably follow soon.
We need your help in ensuring that local license templates and the local equivalent of commons:Template:Information are machine-readable.
The process of marking up templates is described at mw:Multimedia/Media Viewer/Template compatibility.
If MediaViewer was not released on this wiki yet, you can enable it for testing under Preferences > Beta features.
We are happy to answer any question, but do not have the means to follow each page where this message is sent, so please reply at mw:Talk:Multimedia/Media Viewer or my talk page. Thanks!